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