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