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