One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,13)(5,15)(7,10)(8,11)(9,16)(12,14)(17,18)(19,21)(20,24)(22,25)(23,27)(26,29)(28,31)(30,32)(33,34,38,42)(35,39,37,41)(36,40,44,47)(43,46,45,48)(1,3)(2,4)(5,7)(6,11)(8,13)(9,10)(12,16)(14,15)(20,28)(24,31)(26,32)(29,30)(33,34)(35,39)(36,40)(37,41)(38,42)(43,46)(44,47)(45,48) involution — undirected(1,4,8,6)(2,3,11,13)(5,14,16,10)(7,9,12,15)(17,19)(18,23)(20,26)(21,25)(22,27)(24,30)(28,32)(29,31)(33,35,38,37)(34,39,42,41)(36,43,44,45)(40,46,47,48)(1,5)(2,9)(3,12)(4,14)(6,10)(7,13)(8,16)(11,15)(17,20)(18,24)(19,26)(21,29)(22,28)(23,30)(25,31)(27,32)(33,34)(35,39)(36,40)(37,41)(38,42)(43,46)(44,47)(45,48) involution — undirected(1,6,8,4)(2,3,11,13)(5,10,16,14)(7,9,12,15)(17,21,22,23)(18,19,25,27)(20,29,28,30)(24,26,31,32)(33,36)(34,40)(35,43)(37,45)(38,44)(39,46)(41,48)(42,47)(1,7,8,12)(2,10,11,14)(3,5,13,16)(4,9,6,15)(17,19)(18,21)(20,26)(22,27)(23,25)(24,29)(28,32)(30,31)(33,37,38,35)(34,41,42,39)(36,43,44,45)(40,46,47,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.