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