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