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