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