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