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