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