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