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