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