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