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