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