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)(17,18,23,39,24,28,22,29)(19,21,27,25,31,42,32,41)(20,33,38,26,36,48,37,46)(30,43,47,35,34,44,45,40)(3,9)(4,12)(6,13)(7,11)(17,19)(18,25)(20,34)(21,39)(22,27)(23,32)(24,31)(26,44)(28,41)(29,42)(30,36)(33,40)(35,48)(37,45)(38,47)(43,46) involution — undirected(1,3,5,9)(2,6,8,13)(4,10,12,15)(7,14,11,16)(17,20,23,38,24,36,22,37)(18,26,29,33,28,46,39,48)(19,30,32,45,31,34,27,47)(21,40,25,43,42,35,41,44)(3,9)(6,13)(10,15)(14,16)(17,21,22,41,24,42,23,25)(18,27,29,19,28,32,39,31)(20,35,37,43,36,40,38,44)(26,45,33,34,46,47,48,30)(1,4,5,12)(2,7,8,11)(3,10,9,15)(6,14,13,16)(18,28)(19,31)(20,36)(27,32)(29,39)(35,40)(37,38)(43,44)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.