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