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