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