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