One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,13)(5,9)(7,10)(8,12)(11,16)(14,15)(19,25)(23,26)(27,31)(30,32)(33,34,39,37)(35,42,41,38)(36,44,46,40)(43,45,47,48)(1,3)(2,6)(4,5)(7,11)(8,14)(9,13)(10,16)(12,15)(17,18,22,20)(19,23,25,26)(21,28,29,24)(27,32,31,30)(34,37)(35,41)(40,44)(43,47)(3,11)(4,12)(6,16)(8,13)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31)(33,35)(34,38)(36,43)(37,42)(39,41)(40,45)(44,48)(46,47) involution — undirected(1,4)(2,8)(3,5)(6,14)(7,12)(9,16)(10,13)(11,15)(17,20,22,18)(19,26,25,23)(21,28,29,24)(27,32,31,30)(33,36)(34,40)(35,43)(37,44)(38,45)(39,46)(41,47)(42,48)(1,5)(2,9)(3,12)(4,11)(6,8)(7,15)(10,14)(13,16)(17,21)(18,24)(19,27)(20,28)(22,29)(23,30)(25,31)(26,32)(33,37,39,34)(35,42,41,38)(36,44,46,40)(43,48,47,45)(1,6)(2,3)(4,14)(5,8)(7,16)(9,12)(10,11)(13,15)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31)(33,38,39,42)(34,41,37,35)(36,45,46,48)(40,47,44,43)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.