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