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