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