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