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)(19,31,34,46)(20,35,37,47)(21,38)(22,28)(23,29)(24,30)(25,33,45,41)(26,36,44,42)(27,40)(32,43)(39,48)(1,2,5,8)(3,9,10,6)(4,13,12,7)(11,14,16,15)(17,19,24,34)(18,25,30,45)(20,32,37,39)(21,36,40,42)(22,41,23,33)(26,43,44,48)(27,47,38,35)(28,46,29,31)(1,3)(2,6)(4,11)(5,10)(7,14)(8,9)(12,16)(13,15)(17,20)(18,26)(19,32)(21,33)(22,36)(23,42)(24,37)(25,43)(27,46)(28,35)(29,47)(30,44)(31,38)(34,39)(40,41)(45,48) involution — undirected(3,10)(6,9)(11,16)(14,15)(17,21,22,39,24,40,23,32)(18,27,28,43,30,38,29,48)(19,20,33,36,34,37,41,42)(25,44,31,47,45,26,46,35)(1,4,5,12)(2,7,8,13)(3,11,10,16)(6,14,9,15)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.